18474940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1063}}^1$

素因数の和:1162

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 24425540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1063, 1580, 1738, 2126, 3476, 4252, 4345, 5315, 8690, 10630, 11693, 17380, 21260, 23386, 46772, 58465, 83977, 116930, 167954, 233860, 335908, 419885, 839770, 923747, 1679540, 1847494, 3694988, 4618735, 9237470, 18474940]

約数ペア:

[(1, 18474940), (2, 9237470), (4, 4618735), (5, 3694988), (10, 1847494), (11, 1679540), (20, 923747), (22, 839770), (44, 419885), (55, 335908), (79, 233860), (110, 167954), (158, 116930), (220, 83977), (316, 58465), (395, 46772), (790, 23386), (869, 21260), (1063, 17380), (1580, 11693), (1738, 10630), (2126, 8690), (3476, 5315), (4252, 4345)]